change volume to nrf52boot

src/usb/msc_uf2.c

@@ -235,13 +235,14 @@ void msc_flash_init(void)
 {
   pstorage_module_param_t  fat_psp = { .cb = fat_pstorage_cb};
   pstorage_register(&fat_psp, &_fat_psh);
-
-  fat12_mkfs();
 }
 
 void msc_flash_mount(void)
 {
   _wr10_state = WRITE10_IDLE;
+
+  // reset every time it is plugged
+  fat12_mkfs();
 }
 
 void msc_flash_umount(void)

src/usb/msc_uf2.h

@@ -57,7 +57,7 @@
 VERIFY_STATIC( MSC_FLASH_ADDR_START+MSC_FLASH_SIZE == BOOTLOADER_REGION_START-DFU_APP_DATA_RESERVED, );
 
 // must be 11 bytes padded with space
-#define MSC_FLASH_VOL_LABEL       "FEATHER5284"
+#define MSC_FLASH_VOL_LABEL       "NRF52BOOT  "
 
 /*------------------------------------------------------------------*/
 /* Note ATTR_WEAK is used when CFG_TUD_MSC = 0